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Best linux OS for Lenovo X100e?

I have a Lenovo X100e which runs very hot after running for less than 30 mins. CPU temperature runs as high as +70C with Ubuntu 12.04 desktop. I wonder if there are other more suitable linux OS distro? Say peppermint 5?

When you ask for support you should also include as much information about the problem as possible. Including all of the important details in your first post will greatly speed up the entire support process and allow our volunteers to better assist you. While you may think a particular error message isn't very helpful, it may be the key to resolving your issue. Some details we are looking for would include, but not be limited to:

Do you know what frequency the CPU runs at when the computer is 'idling'? I have seen the 1.8GHz CPU in my laptop run at three speeds: 800MHz, 1600MHz and 1800MHz. When it runs at 1800MHz for extended periods of time it can overheat, but when running at 800MHz for extended periods of time it cools down enough for the fan to switch off completely.

lscpu

...should display the frequency in MHz.

*buntu 12.04 should handle all this automatically.

If you try Puppy, look for 'CPU Frequency Scaling Tool' in the set up menu, and go through the options to enable that for your CPU - just pick the default choices that are offered, and when it comes to choosing the correct driver for your CPU from the list you are presented with, just try different ones until you find one that the software accepts - it will tell you if you've picked the correct one or not.

'On demand' CPU Frequency Scaling on Puppy does exactly as I described, and slows the CPU frequency down when it's full processing power is not required, meaning the CPU runs a lot cooler than it otherwise would.

But like I said, *buntu should do this (by default) as well, so unless something has gone wrong with your particular installation, I would doubt that the operating system is the problem.